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Gastric CancerPhase 1/2NCT02689284

Combination Margetuximab and Pembrolizumab for Advanced, Metastatic HER2(+) Gastric or Gastroesophageal Junction Cancer

A Phase 1/2 study testing Margetuximab 10 mg/kg, Margetuximab 15 mg and Pembrolizumab in people with Gastric Cancer and Stomach Cancer, run by MacroGenics at 28 sites in 5 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This main purpose of this clinical study is to learn about the safety and activity of margetuximab and pembrolizumab combination treatment in patients with HER2+ gastric and gastroesophageal junction cancer. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Gastric Cancer, Stomach Cancer, Esophageal Cancer
What is being tested?
Margetuximab 10 mg/kg, Margetuximab 15 mg and Pembrolizumab
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
95 participants
Where
28 sitesin 5 countries
Study dates
Jan 2016to Jan 2021
Phase
Phase 1/2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Signed written informed consent.
  • Age ≥ 18 years old (or minimum age based upon local regulations)
  • Unresectable locally advanced or metastatic histologically proven HER2+ gastroesophageal junction (GEJ) or gastric cancer. Gastric Cancer Expansion Phase will include only gastric cancer patients with 3+ HER2 positivity.
  • HER2+ as 3+ (as defined in AJCC staging manual 8th edition) by IHC or in-situ hybridation (ISH) amplified.
  • Have received prior treatment with trastuzumab.
  • Have received treatment with at least one or more lines of cytotoxic chemotherapy in the metastatic setting.
Show all 10Show fewer
  • Resolution of chemotherapy, immunotherapy or radiation-related toxicities.
  • Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1.
  • Life expectancy ≥ 12 weeks.
  • Measurable disease as per RECIST 1.1 criteria.

Who cannot join

  • Patients with symptomatic central nervous system (CNS) metastases.
  • Patients with any history of known or suspected autoimmune disease with the specific exceptions of vitiligo, atopic dermatitis, or psoriasis not requiring systemic treatment.
  • History of prior allogeneic bone marrow, stem-cell or solid organ transplantation.
  • Treatment with any systemic anti-neoplastic therapy, or investigational therapy within the 3 weeks prior to the initiation of study drug.
  • Treatment with radiation therapy within 3 weeks prior to the initiation of study drug administration.
  • Treatment with corticosteroids (≥10 mg per day prednisone or equivalent) or other immune suppressive drugs within the 14 days prior to the initiation of study drug administration.
Show all 11Show fewer
  • History of clinically-significant cardiovascular disease.
  • Clinically-significant pulmonary compromise, including a requirement for supplemental oxygen use to maintain adequate oxygenation.
  • History of (non-infectious) pneumonitis that required steroids or presence of active pneumonitis
  • Clinically-significant gastrointestinal disorders, such as perforation, gastrointestinal bleeding, or diverticulitis.
  • Evidence of active viral, bacterial, or systemic fungal infection.

Trial locations and contacts

28 sites in 5 countries.

28 sites in 5 countries

United States11 sites
  • Johns Hopkins University Medical Center

    Baltimore, Maryland, 21231

  • Dana-Farber Cancer Institute/Harvard University Medical Center

    Boston, Massachusetts, 02215

  • University of Chicago

    Chicago, Illinois, 60637

  • Karmanos Cancer Institute

    Detroit, Michigan, 48201

  • Duke University Medical Center

    Durham, North Carolina, 27710

  • Sarah Cannon Research Institute

    Nashville, Tennessee, 37203

  • Yale School of Medicine

    New Haven, Connecticut, 06520

  • Fox Chase Cancer Center

    Philadelphia, Pennsylvania, 19107

  • Swedish Cancer Institute

    Seattle, Washington, 98104

  • Washington University School of Medicine

    St Louis, Missouri, 63110

  • Georgetown University-Lombardi Comprehensive Cancer Center

    Washington D.C., District of Columbia, 20007

Other trials in United States

South Korea9 sites
  • Kyungbuk National University Hospital

    Daegu, 41404

  • Gachon University Gil Medical Center

    Incheon, 21565

  • Chonbuk National University Hospital

    Seoul, 54907

  • Asan Medical Center

    Seoul

  • Korea University Anam Hospital

    Seoul

  • Korea University Guro Hospital

    Seoul

  • Samsung Medical Center

    Seoul

  • Seoul National University Bundang Hospital

    Seoul

  • Seoul National University Hospital

    Seoul

Other trials in South Korea

Singapore3 sites
  • National Cancer Centre

    Singapore

  • National University Hospital

    Singapore

  • Raffles Hospital

    Singapore

Other trials in Singapore

Taiwan3 sites
  • National Taiwan University Hospital

    Taipei

  • Taipei Veterans General Hospital

    Taipei

  • Tri-Service General Hospital

    Taipei

Other trials in Taiwan

Canada2 sites
  • Juravinski Cancer Centre - McMaster University

    Hamilton, Ontario, L8V5C2

  • McGill University Health Centre

    Montreal, Quebec, H4A3J1

Other trials in Canada

About this study

Official title: A Phase 1b/2, Open Label, Dose Escalation Study of Margetuximab in Combination With Pembrolizumab in Patients With Relapsed/Refractory Advanced HER2+ Gastroesophageal Junction or Gastric Cancer

This main purpose of this clinical study is to learn about the safety and activity of margetuximab and pembrolizumab combination treatment in patients with HER2+ gastric and gastroesophageal junction cancer.

Read the detailed description

Detailed Description: Both margetuximab and pembrolizumab are monoclonal antibodies used in combination to treat HER2+ gastric and gastroesophageal junction cancer. This study has two parts: Dose Escalation and Dose Expansion. The Dose Escalation phase of the study will evaluate safety of escalating doses of the combination treatment. The Dose Expansion phase will evaluate safety and activity of the combination in patients with gastric or gastroesophageal cancer once the final dose and schedule are defined. In addition, a cohort of patients with HER2+ 3+ gastric cancer patients will be enrolled in the Dose Expansion Phase.

Being tested
Margetuximab 10 mg/kg, Margetuximab 15 mg, Pembrolizumab
Medical subject headings
Stomach Neoplasms, Esophageal Neoplasms

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Margetuximab 10 mg/kgBiological

    Also called MGAH22

    Margetuximab treatment is administered intravenously (IV) once every 21-day cycle

  • Margetuximab 15 mgBiological

    Also called MGAH22

    Margetuximab treatment is administered IV once every 21-day cycle

  • PembrolizumabBiological

    Also called MK-3475

    Pembrolizumab treatment is administered IV once every 21-day cycle

Study groups in NCT02689284
Study groupRoleWhat they receive
Cohort 1: Margetuximab 10 mg/kg plus pembrolizumab 200 mgExperimentalmargetuximab administered in combination with pembrolizumab
Receives: Biological: Margetuximab 10 mg/kg; Biological: Pembrolizumab
Cohort 2: Margetuximab 15 mg/kg plus pembrolizumab 200 mgExperimentalmargetuximab administered in combination with pembrolizumab
Receives: Biological: Margetuximab 15 mg; Biological: Pembrolizumab

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Patients With Dose Limiting Toxicities

    Characterize maximum tolerated dose (MTD) or maximum administered dose (MAD) (if no MTD is defined) of margetuximab when administered in combination with pembrolizumab

    Measured: 21 days

  2. Number of Patients With Adverse Events (AEs) and Serious Adverse Events (SAEs).

    The number of patients that experience either an AE or a SAE during the study participation

    Measured: up to 24 months

  3. Number of Patients With a Complete Response (CR) or Partial Response (PR) to Treatment

    Investigate the preliminary anti-tumor activity as measured by response to treatment of margetuximab when administered in combination with pembrolizumab, using conventional Response Evaluation Criteria in Solid Tumors (RECIST) 1.1

    Measured: 12 months

  4. Number of Patients With a Complete Response (CR) or Partial Response (PR) to Treatment Using irRC Criteria

    Investigate the preliminary anti-tumor activity, as measured by objective response rate (ORR) of margetuximab when administered in combination with pembrolizumab, using immune-related response criteria (irRC).

    Measured: 12 Months

  5. Duration of Response

    Duration of response is calculated at the time from CR or PR to relapse or cancer progression.

    Measured: up to 24 months

Secondary outcomes (10)
  1. Overall Survival (OS)

    The median length of time between first dose of study medication and death from any cause.

    Measured: 24 Months

  2. Progression Free Survival (PFS)

    The interval between the first dose of study medication and progression of disease or death from any cause.

    Measured: 24 Months

  3. Change From Baseline in Pharmacodynamic Markers in Whole Blood

    The planned assessment included examination of markers of T-cell activation

    Measured: from first dose to the end of treatment, average about 12 months

  4. Analysis of HER2 Tumor Cell Membrane Expression in Biopsy Specimens Before and After Treatment

    Measured: from first dose to the end of treatment, average 12 months.

  5. Number of Patients Who Develop Treatment-emergent Anti-drug Antibodies to Margetuximab (Immunogenicity)

    Measured: Assessed Cycle 1 Day 1, Cycle 2 Day 1, Cycle 3 Day 1, Day 1 of every odd cycle, and end of treatment visit, average 12 months

  6. Maximum Concentration of Margetuximab at Steady State

    Measurement of PK characteristics is limited to margetuximab. No analysis of pembrolizumab was conducted.

    Measured: At end of infusion on Cycle 1, Day 1. Cycle 2, Day 1; Cycle 3, Days 1 and 2; Cycle 5 Day 1, Cycle 7 Day 1, and end of treatment visit, average 12 months

  7. Area Under the Concentration Time Curve at Steady State (AUC ss)

    AUC is a mathematical calculation that describes the variation in drug concentration in the blood over time.

    Measured: Predose and at end of infusion on Cycle 1, Days 1, 2 and 8: Cycle 2, Day 1; Cycle 3, Days 1 and 2; Cycle 5 Day 1, Cycle 7 Day 1, and end of treatment visit, average 12 months

  8. Clearance

    Drug clearance is the amount of drug removed from the bloodstream by the body per unit of time.

    Measured: Predose and at end of infusion on Cycle 1, Days 1, 2 and 8: Cycle 2, Day 1; Cycle 3, Days 1 and 2; Cycle 5 Day 1, Cycle 7 Day 1, and end of treatment visit, average 12 months.

  9. Volume of Distribution at Steady State

    The volume of distribution is related to a whether how much drug is distributed to body tissues, or remains in the bloodstream.

    Measured: Predose and at end of infusion on Cycle 1, Days 1, 2 and 8: Cycle 2, Day 1; Cycle 3, Days 1 and 2; Cycle 5 Day 1, Cycle 7 Day 1, and end of treatment visit average 12 months .

  10. Terminal Half-life

    Terminal half-life is the time required to divide the plasma concentration by two after reaching pseudo-equilibrium.

    Measured: Predose and at end of infusion on Cycle 1, Days 1, 2 and 8: Cycle 2, Day 1; Cycle 3, Days 1 and 2; Cycle 5 Day 1, Cycle 7 Day 1, and end of treatment visit average 12 months .

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted23 Feb 2016 (estimated)
  2. Study startJan 2016
  3. Primary completionJan 2021
  4. Study completionJan 2021

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1/2
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Single group
Masking
None (open label)
Enrolment
95 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02689284
Sponsor's protocol ID
CP-MGAH22-05
Status last verified
Feb 2025
First submitted
27 Jan 2016
Last updated
17 Mar 2025
Data monitoring committee
No
Individual data sharing
No

Publications

  • Catenacci DV, Kang YK, Uronis HE, Lee KW, Ng MC, Enzinger PC, Park SH, Gold PJ, Lacy J, Hochster HS, Oh SC, Kim YH, Marrone KA, Kelly RJ, Juergens RA, Kim JG, Alcindor T, Sym SJ, Song EK, Chee CE, Chao Y, Kim S, Oh DY, Yen J, Odegaard JI, Lagow E, Li D, Sun J, Kaminker P, Moore PA, Rosales MK, Park H. Circulating Tumor DNA as a Predictive Biomarker for Clinical Outcomes With Margetuximab and Pembrolizumab in Pretreated HER2-Positive Gastric/ Gastroesophageal Adenocarcinoma. Oncology (Williston Park). 2023 Apr 25;37(4):176-183. doi: 10.46883/2023.25920992.

    PubMed 37104758
  • Catenacci DVT, Kang YK, Park H, Uronis HE, Lee KW, Ng MCH, Enzinger PC, Park SH, Gold PJ, Lacy J, Hochster HS, Oh SC, Kim YH, Marrone KA, Kelly RJ, Juergens RA, Kim JG, Bendell JC, Alcindor T, Sym SJ, Song EK, Chee CE, Chao Y, Kim S, Lockhart AC, Knutson KL, Yen J, Franovic A, Nordstrom JL, Li D, Wigginton J, Davidson-Moncada JK, Rosales MK, Bang YJ; CP-MGAH22-5 Study Group. Margetuximab plus pembrolizumab in patients with previously treated, HER2-positive gastro-oesophageal adenocarcinoma (CP-MGAH22-05): a single-arm, phase 1b-2 trial. Lancet Oncol. 2020 Aug;21(8):1066-1076. doi: 10.1016/S1470-2045(20)30326-0. Epub 2020 Jul 9.

    PubMed 32653053

Questions about this trial

What is this clinical trial studying?

A Phase 1/2 study testing Margetuximab 10 mg/kg, Margetuximab 15 mg and Pembrolizumab in people with Gastric Cancer and Stomach Cancer, run by MacroGenics at 28 sites in 5 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 10 inclusion and 11 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 17 Mar 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 28 sites in United States, South Korea, Singapore, Taiwan, Canada. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this combined phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 4 Aug 2022). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Patients With Dose Limiting Toxicities (time frame: 21 days). The study lists 5 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02689284, which also lists 2 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 Mar 2025.

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